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Wagonburner posted:Laptop battery is like 20v. A phone battery or USB power pack thing is a single or several small parallel li- ion cells at li-ion native voltage of like 3.3-4.2. A 20v battery has 3.3v cells wired in series to equal 20. 6 cells is typical. Extended batts parallel like 3 more cells on. Nah I think you guys answered it. Was wondering what the differences were, a friend posted a particularly daft question on Facebook where he was complaining that the laptop batteries available had such a low charge amount compared to his stupid loving portable cell phone charger. I knew there was a huge difference but couldn't put it to words. Install Gentoo posted:Your laptop pulls somewhere between 40 and 130 watts depending on the exact model it is when charging. So to be clear though.. if my laptop says it has a capacity of 6700mAH and my cell phone charger says 6700mAH. The mAH for the Laptop is actually rated comparatively against the power consumption of the Laptop. So in laymans terms.. it's a difference in scale. Like a radio controlled car may travel at a 90 scale miles per hour, but in reality it's probably going something like 15 real miles per hour?
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Mar 24, 2013 04:31
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Christoph posted:A friend of mine used to work at a gas station and occasionally a Philip Morris rep would come in and switch out the expired cigarettes for fresh ones. What do they do with the expired ones? Label them Decades? Destroy them, probably by burning them. The actual cost of cigarettes is low enough that hiring Philip Morris Rep to burn cigarettes in a fire costs more than the cigarettes themselves. The company's supply is functionally infinite - they make more money by selling another, fresher pack of cigarettes than they do by selling old ones at a reduced price. In fact, they estimate that the damage to their brand that occurs when someone buys a stale pack of cigarettes actually costs them more than a pack of cigarettes costs to manufacture and distribute. This isn't unique to the cigarette industry - I remember working at a CompUSA right around the time that the Ngage came out. We couldn't sell any, and, after a few months, we wanted to take them off the shelf. CompUSA exercised it's option to return the Ngages to the manufacturer for a refund - something that was built into whatever contract we had with them - but Nokia didn't want the loving things either. They sent us our refund, and asked us to send them proof that the Ngages were destroyed (not sold at a reduced rate, or given to an employee).
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Mar 24, 2013 04:42
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Jet Ready Go posted:So to be clear though.. if my laptop says it has a capacity of 6700mAH and my cell phone charger says 6700mAH. Well 1000 milliamp hour means "could theoretically provide current of 1000 milliamps for one hour at voltage X". To find the amount of energy nominally stored you need the voltage too, if something provides 1000 milliamp hours with an output voltage of 0.1 volts, it's storing very little power. If it's doing the same at 120 volts it's storing a huge amount of power. So looking at my laptop's battery, which is 11.1 volts and 5045 milliamp hours versus my phone's which is 3.8 volts and 2100 milliamp hours, the energy stored is 201,600 joules vs 28,728. If I had a 5045 milliamp hour battery to put in the phone instead, but still at the same voltage so the phone would work? That would still only be 69,015 joules. Even though the same milliamp hours, the much higher voltage times the milliamp hour storage means much more energy is there (and essentially, means that there's going to be physically more battery there!)
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Mar 24, 2013 04:43
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Okay cool that's what I thought. Thank you!
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Mar 24, 2013 04:46
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isoprenaline posted:I make my own breakfast cereal out of rolled oats, bran sticks, sultanas and, sometimes, other dried fruits and nuts.
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Mar 24, 2013 04:55
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Kitty Green Lightning, what's the story there? I know she was in 'art school' at one point.
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Mar 24, 2013 07:33
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Does anyone have an opinion on whether CFLs or LEDs are a better idea for grow lights?
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Mar 24, 2013 07:42
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The main disadvantage of CFLs and LEDs vs incandescent is that they produce very peaky spectral power distributions, but it looks like that's actually ideal for plants since the photosynthesis process requires specific narrow wavelength bands. Since LEDs are even peakier than CFLs, and also more power efficient, it looks like they're likely to be the better choice as long as LEDs are available that can produce the appropriate spectra (which appears to be the case).
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Mar 24, 2013 08:43
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isoprenaline posted:I make my own breakfast cereal out of rolled oats, bran sticks, sultanas and, sometimes, other dried fruits and nuts. Bad news: since your components all have different densities and packing factors (which combine into a property called "bulk density"), they will naturally tend to stratify themselves. You can observe this problem relatively easily in mixed nuts: when you open a container, the largest nuts will probably be at the top, since they have a smaller packing fraction (and therefore bulk density, true density being held equal) than the smaller nuts. By agitating your cereal, like mixed nuts get agitated in shipping, you're actually providing it with enough energy to reconfigure into the lowest energy state, which will be stratified. Obviously a certain amount of shaking will tend to mix things up, but if you shake too long you're going to start re-stratifying your cereal. Your best bet to try to get an even mix would probably be, as someone else said, to combine them in a container that is much bigger than necessary, so things have room to move, then give the cereal only a few (maybe five or ten) brisk shakes.
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Mar 24, 2013 08:50
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isoprenaline posted:I make my own breakfast cereal out of rolled oats, bran sticks, sultanas and, sometimes, other dried fruits and nuts. Rent-A-Cop posted:Use a bigger container for your initial mixing. You want to have a lot of extra space leftover for things to move around in. Mix a few cups at a time in a gallon sized container and then pour the mix into your jars. It'll take a little longer, but you should get a more even distribution. Larger things rise to the top and smaller things sink to the bottom. Think what would happen if you put rocks in a jar, then added sand and shook it. The sand would sink to the bottom. There will never be an even distribution. Use that knowledge to your advantage - put everything in a huge jar with a large mouth and shake it all about. Turn the jar on its side and scoop sideways through and you should get a more even mix of your goodies. e: beaten with more accurate science, but we're all on the same page TATPants fucked around with this message at 09:01 on Mar 24, 2013 |
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Mar 24, 2013 08:59
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razz posted:In most states the landlord is required by law to have a smoke detector in every room, so I'd at least bring it up with him/her before you take them down. That being said, all but one of the smoke detectors in my house are sitting in a drawer, haha.
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Mar 24, 2013 09:11
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Dudebro posted:Sweet, thanks! What can't VLC do Play media files in a cpu efficient or visually optimal manner. 
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Mar 24, 2013 10:48
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Are there any good OTC medicines for nausea that I could find in a Rite Aid or similar regular pharmacy? I currently buy and consume a lot of Nauzene chewables, which are small miracles, but I need something better. I'm down to buy just about anything. Also, are there any commonsense cures for nausea that might help mitigate its effects?
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Mar 24, 2013 11:04
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Diphenhydramine (Benadryl), and on the illegal side, Marijuana.
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Mar 24, 2013 11:09
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Another 24 question: when they're torturing suspects for information, they inject something into their neck. It seems to cause them pain. Does it have a real-world correlate? If so, what is it and what does it do? Also why can't they use truth serum? Or is that not real?
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Mar 24, 2013 11:21
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They could be injecting any number of substances, including just, you know, stabbing someone in the arm and injecting water. Sodium thiopental (a barbituate) is the closest analogue to a 'truth serum' but it is wildly unreliable, there is no such thing as truth serum.
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Mar 24, 2013 11:25
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marshmallard posted:Another 24 question: when they're torturing suspects for information, they inject something into their neck. It seems to cause them pain. Does it have a real-world correlate? If so, what is it and what does it do? Sodium pentothal is colloquially referred to as 'truth serum'.
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Mar 24, 2013 11:25
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Reichstag posted:They could be injecting any number of substances, including just, you know, stabbing someone in the arm and injecting water. Sodium thiopental (a barbituate) is the closest analogue to a 'truth serum' but it is wildly unreliable, there is no such thing as truth serum. They inject it into their neck and they instantly react like they're in enormous amounts of pain. Is there something you can inject that causes pain like that, or is it just made up for 24? I know they do make up some of the stuff they show, like 'voiceprints' - any linguistics student will tell you they don't exist.
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Mar 24, 2013 11:30
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marshmallard posted:They inject it into their neck and they instantly react like they're in enormous amounts of pain. Is there something you can inject that causes pain like that, or is it just made up for 24? As I said, injecting anything into someone's bloodstream can cause enormous amounts of pain, and in specific there are innumerable substances which could escalate that.
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Mar 24, 2013 11:31
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Reichstag posted:As I said, injecting anything into someone's bloodstream can cause enormous amounts of pain, and in specific there are innumerable substances which could escalate that. Oh I thought you meant they were injecting water to fool them into thinking they were injecting something. Injecting water into your bloodstream hurts, really? That's weird.
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Mar 24, 2013 11:33
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Water specifically, if injected properly, might not hurt too much over any saline solution, but my point is simply that if someone stabs you in the neck in a quick motion as they do in the show, it is going to hurt. And if they inject properly, any number of substances could be used to cause pain without permanent damage. To expand on the 'truth serum' portion, barbituates and other intoxicants can only make a person more open to suggestion and less guarded. The idea of a 'truth serum' relies on a false notion that objective truth exists within the mind and can be extracted based on chemical alteration. In reality, all that can be done is to make someone less suspicious, which in practice generally means that they are intoxicated and less mentally stable. What this translates to is pretty much trying to extract information from a drunk person; they may end up telling you the truth, but their generally unreliable mental state makes any information you might get from them useless.
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Mar 24, 2013 11:41
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That makes sense. I guess it'd be far too convenient if there was a 'truth' box in people's heads that could be unlocked with the right molecule. I'm not planning to interrogate anyone, by the way, 24 just raises a lot of questions and I never know who to ask!
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Mar 24, 2013 11:45
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It expands to include people under duress in general. A person being tortured will eventually tell you whatever they think you want to hear in an attempt to stop the torture, which makes any information garnered useless.
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Mar 24, 2013 11:52
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Buh posted:Can anyone recommend strategies for dealing with extreme nausea? Ginger works for me. The crystallized stuff is easy to eat if it is mild. Does she have any medications for her nausea? Are they not working well?
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Mar 24, 2013 12:30
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isoprenaline posted:I make my own breakfast cereal out of rolled oats, bran sticks, sultanas and, sometimes, other dried fruits and nuts. I make my breakfast cereal the same way, but I use bran flakes which makes shaking a bad idea because they'd just get all crushed and crumbled. I've found that the best way to mix it is to fill the container about ¾ and then just slowly rotate it in various directions for a while. The distinct layers you start with get tipped gradually so they spread out and the changing directions make stuff spread out in a fairly even way.
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Mar 24, 2013 13:09
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marshmallard posted:They inject it into their neck and they instantly react like they're in enormous amounts of pain. Is there something you can inject that causes pain like that, or is it just made up for 24? 24 got a bit silly like that. edit: http://24.wikia.com/wiki/Hyoscine-pentothal (Burke was apparently just one of several CTU interrogators, no idea why I remembered his name.) VagueRant fucked around with this message at 15:27 on Mar 24, 2013 |
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Mar 24, 2013 15:25
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cheerfullydrab posted:Are there any good OTC medicines for nausea that I could find in a Rite Aid or similar regular pharmacy? I currently buy and consume a lot of Nauzene chewables, which are small miracles, but I need something better. I'm down to buy just about anything. Also, are there any commonsense cures for nausea that might help mitigate its effects? Mint herbal tea. You can buy something like this or just make your own with mint leaves and hot water. If you buy something, make sure it's herbal tea (or tisane) and doesn't contain any actual tea, because real tea can exacerbate your nausea.
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Mar 24, 2013 16:26
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randyest posted:Your advice to check with the landlord is good but I've never seen a house or apartment with smoke detectors in every room. A quick google search seems to say most (US) states require them in the hallways outside bedrooms, and you can have one for multiple bedrooms.. One in every room would be nuts. I don't think it's a law in Nevada, but yeah my apartment does have a detector in every room, save the bathrooms.  Tried making some chicken tenders last night and the drat things went off while the oven was preheating to 450, so out they go, rules be damned. I've already called the front office and left a message about getting photoelectric sensors though. Hopefully those are less prone to false alarms than the ionization ones I have.
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Mar 24, 2013 19:40
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Ciaphas posted:Tried making some chicken tenders last night and the drat things went off while the oven was preheating to 450 You probably need different detectors, but just for curiosity's sake, have you cleaned your oven in a while?
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Mar 24, 2013 19:49
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Base Emitter posted:You probably need different detectors, but just for curiosity's sake, have you cleaned your oven in a while? In fact before cooking last night, it had not been used since I cleaned it last. Doesn't seem to make a difference as far as the alarms go, I've let the oven go uncleaned for a long time before and it doesn't make the alarms go off any faster, smell any different, etc Also I haven't used them in a while so I forgot, but the stove top sets them off pretty reliable too, above a medium heat. Which is weird because it and the oven are both electric, so it's not like there's actual fire. (PS electric stove tops suck so much oh my god.)
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Mar 24, 2013 20:28
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Ciaphas posted:In fact before cooking last night, it had not been used since I cleaned it last. Doesn't seem to make a difference as far as the alarms go, I've let the oven go uncleaned for a long time before and it doesn't make the alarms go off any faster, smell any different, etc I had a smoke detector outside my bathroom that would go off after I showered. And I had one in a kitchen that would go off while I was boiling water, on an electric range no less. New batteries did nothing to alleviate this. My only theory about the one outside the bathroom was that I lived downwind of a wildfire that smoked the place up good for about a solid month last summer (which NEVER set the loving detectors off, even though I'd wake up feeling like I'd smoked a pack of cigarettes in my sleep) and somehow that gunk built up on the detector and then the steam from a shower melts the gunk and activates the sensor?
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Mar 24, 2013 20:51
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What happened to that thread that had pictures of people pets with tags/notices hanging from them that said things like, "I ate cat poo poo from the litter box" around a dog's neck. It was a huge thread and I can't even remember what it was called now.
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Mar 24, 2013 20:55
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SERPUS posted:What happened to that thread that had pictures of people pets with tags/notices hanging from them that said things like, "I ate cat poo poo from the litter box" around a dog's neck. It was a huge thread and I can't even remember what it was called now. The meme is called pet shaming. I don't know if there's a thread about it.
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Mar 24, 2013 21:01
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syscall girl posted:I had a smoke detector outside my bathroom that would go off after I showered. And I had one in a kitchen that would go off while I was boiling water, on an electric range no less. New batteries did nothing to alleviate this. Most common smoke detectors work by detecting radiation from an ionising source built into them. Smoke in the air blocks this radiation causing the detector to go off. Unfortunately, water vapour also blocks the radiation which is why they don't often have detectors close to bathrooms as the showers will set them off. Often boiling water in a kettle is enough to set off a detector if it's close enough to the kitchen. Thermal detectors that will be triggered by a quick increase in heat from a fire are better used around humid areas rather than ionising detectors.
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Mar 24, 2013 21:14
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John McCain posted:Bad news: since your components all have different densities and packing factors (which combine into a property called "bulk density"), they will naturally tend to stratify themselves. You can observe this problem relatively easily in mixed nuts: when you open a container, the largest nuts will probably be at the top, since they have a smaller packing fraction (and therefore bulk density, true density being held equal) than the smaller nuts. By agitating your cereal, like mixed nuts get agitated in shipping, you're actually providing it with enough energy to reconfigure into the lowest energy state, which will be stratified. Obviously a certain amount of shaking will tend to mix things up, but if you shake too long you're going to start re-stratifying your cereal. Your best bet to try to get an even mix would probably be, as someone else said, to combine them in a container that is much bigger than necessary, so things have room to move, then give the cereal only a few (maybe five or ten) brisk shakes. This isn't actually true - particles with the same bulk density will still separate out. The so-called Brazil nut effect is primarily a size based effect but the exact mechanism is (to the best of my knowledge) not fully understood. To get a good mixing the easiest way is probably to invert the container and shake gently until the layers remix. Be careful as pouring will quickly cause everything to resegregate.
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Mar 24, 2013 22:23
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Ciaphas posted:(PS electric stove tops suck so much oh my god.) Electric stoves are the best. You get way better control and the heat is spread more evenly than gas. Plus you don't have to keep a lighter by the stove. (USER WAS PUT ON PROBATION FOR THIS POST) Tiggum fucked around with this message at 14:10 on Mar 25, 2013 |
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Mar 25, 2013 01:51
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Tiggum posted:Electric stoves are the best. You get way better control and the heat is spread more evenly than gas. Plus you don't have to keep a lighter by the stove. I don't know what horrible contraption you used that required manual lighting and was worse than a godforsaken electric stove, but you really ought to give a real gas stove a try some time.
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Mar 25, 2013 02:04
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In books from the early 20th century or so they often do this thing where someone will be mentioned who's not important to the story at all and the name is censored, like "He'd just returned from a weekend at the house of Lord N_______." What's the reason behind that? Is it just to let you know that this guy is completely irrelevant and there's no need to remember his name?
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Mar 25, 2013 04:16
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Tiggum posted:In books from the early 20th century or so they often do this thing where someone will be mentioned who's not important to the story at all and the name is censored, like "He'd just returned from a weekend at the house of Lord N_______." What's the reason behind that? Is it just to let you know that this guy is completely irrelevant and there's no need to remember his name? In some cases it was because referring to someone in writing by just the first letter was a common shorthand in diaries and journals at the time, and using that for a novel kind of lent things a personal feel. Like you would write in a journal "Visited Joe H__ today" or something. In other cases, it was being done to imply a "this is based on something that happened, names changed to protect the innocent!" kind of thing. And then lastly some authors used it to make things less specific - you may also notice that old stories will bizarrely refer to something as happening in "18__" or "190_". Even though there wasn't really a point to it.
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Mar 25, 2013 04:22
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Install Gentoo posted:In some cases it was because referring to someone in writing by just the first letter was a common shorthand in diaries and journals at the time, and using that for a novel kind of lent things a personal feel. Like you would write in a journal "Visited Joe H__ today" or something. Cool kids use XX now.  There was a webcomic about traffic safety a while ago that got ripped on with people editing them comically. It was like Traffic Lawls or something like that. Anybody remember it?
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Mar 25, 2013 06:13
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